Burglar-alarm



(No Model.)

J.N.YELT0N.

BURGLAR ALARM.

No. 339,962. Patented Apr. 13,1886.

ArsNr trice.

JASPER N. YELTON, OF CATAVBA, KENTUCKY.

BURGLAR-ALARIVI.

SPECIFICATION forming part of Letters Patent N0.339,962, dated April13,1886. Application tiled February 9, 1886. Serial No. 191,317. (Nomodel.)

To all whom it may concern: i

Be it known that l, JsPEa N. YEL'roN, a citizen of the United States,residing at Catawba, in the county of Pendleton and State of Kentucky,have invented certain new and useful Improvements in Burglar-Alarms, ofwhich the following is a specification, reference being had therein tothe accompanying drawings.

This invention relates to certain improvements-in burglar-alarms, itsobject being to provide a device of simple and effective con structionthat will be applicable to the doors and windows of buildings, and be soarranged that upon opening the door or window to which it is applied anexplosion will occur, and thus signify the presence of burglars andalarm the occupants of the building; andthe invention consists incertain novel features of construction and arrangement of parts, as willbe more fully hereinafter described, and particularly pointed out in theclaim.

In the drawings annexed, Figurel is a perspective view, showing theapplication to a door, of a signaling device embodying the features ofmy improvement. Fig. 2 is a perspective representation ot myimprovement, showing its application to use in connection with a window.Fig. 8 is a sectional view of the alarm mechanism.

A is a door; B, the door-frame.

C G' is a bracket having its part C perforated for the reception ofscrews, by means of which itis secured to the door-frame. The part C isprovided with a longitudinal recess for the reception of a bow-shapedspring, D, and at its outer end with a recess, F, for the reception of ablank cartridge or other eX- plosive.

E E is a hammer pivoted to the bracket C, as shown at d, in a manner toengage the spring D, and is provided at its impact end with a point, d',for effectively engaging with the cartridge.

G G is a door-bolt and socket-plate of ordinary construction. By settingthe sliding bolt G in the position shown the hammer will be set byclosing the door either from the inside or outside of the building.Should the door or window be opened while the device is set for action,the bolt will strike the portion of the hammer marked E and cause thesame to explode the cartridge in the recess F. By adjusting the bolt Gso it cannot engage with the hammer, the mechanism will bemadeinactiveand the door or window may be opened or closed withoutproducing the effects described.

Referring to Fig. 2, K and K represent the outside and inside sashes ofa window. The bracket C C is secured to the sash K in a verticalposition, as shown.

H is an arm affixed to or made integral with a disk-like body, H,provided centrally with a vertical perforation for the reception of abolt, h, which pivotally secures the saine to a plate, H2, affixed tothe sash K by screws or other suitable means.

H3 is a handle secured to the disk for the purpose of operating thesame.

It is evident that instead of the'device attached to the inside sash,K,any of the wellknown saslrlocks may be used.V The center of thebow-spring bears against the straight side of the arm E of the hammer,so as to force the hammer downward when tripped, and against the iiatside of the arm E, so as to hold said ha1nmer-lever in an elevatedposition until tripped, and then permit it to be forced down upon thecartridge, so as to explode the same. It will be seen that thehammer-lever is pivoted directly over the crown of the bow-spring, sothat the angle in shifting below the pivotal point permits the singlespring to hold and move the lever in the opposite direction, asrequired. By grasping and holding the hammer while the bolt G or arm Hare being adj usted to clear the same, it may be set in the positionshown in Fig. 3, and the door or kwindow opened without exploding thecartridge, as occasion may require; but this adjustment of course canonly be made from the inside.

Having explained the features of my improvement, what I claim as new,and desire to secure by Letters Patent, is-

In a burglar-alarm, a bracket provided with a longitudinal recess forthe reception of a bow-spring and a recess for the recep- In testimonywhereof Irax my signature in tion of a cartridge, and an angular leveror presence of twowitnesses. V hammer pivoted in said longitudinal'recess directly over the crown of the bow-spring, JASPER N. YELTON.

5 so as to be operated upon by the same and explode the cartridge, incombination with Witnesses: au adjustable operating-bolt, substantiallyas G. W. MOKINLEY, described. u VJ. E. MCKEE.

